Abstract: Hydrogen is considered to be one of the most desirable clean energy sources and plays an important role in petroleum, chemical, metallurgical, petrochemical, food and fertilizer industries. Steam catalytic reforming of bio-oil for hydrogen production is considered as a promising and economically viable sustainable green hydrogen production technology, which has received a lot of attention from researchers. This paper presents a review of recent research in this field, focusing on the catalytic reforming of bio-oils (bio-crude oil, aqueous bio-oil and heavy bio-oil/tar), bio-oil model compounds (carboxylic acids, alcohols, phenols, etc.) and other bio-oil derivatives for hydrogen production, including the reforming reaction mechanism, reforming process and catalysts. The development of energy-efficient and efficient catalytic reforming reactors and stable and highly active reforming catalysts are the main focus of current and future research and promotion in the field of catalytic reforming of bio-oil for hydrogen production.